Duluth Grand Opera House, 1887. The building was the first home of the Kitchi Gammi Club and Alonzo J. Whiteman’s residence when it burned in 1889.

Police station in Duluth after being damaged by the lynch mob that murdered Elias Clayton, Elmer Jackson, and Isaac McGhie on June 15, 1920.

The Duluth Street Railway hired twenty-one women as streetcar conductors (or "conductresses," as they termed them) in 1918. Some of them posed outside the streetcar barn at Twenty-sixth Avenue West and Superior Street for this photo taken June 21, 1918.

On a railroad bridge west of Two Harbors, a DM&IR freight consisting entirely of ore cars, or jennies, is seen being pulled by a powerful Yellowstone type steam locomotive, ca. 1940. The locomotive behind it was the most recent locomotive acquisition at the time of the photo.